# NTSB GAA19CA190: Cessna 172, N20521, Hollywood, FL, March 21, 2019 - Type: NTSB accident investigation - Classification: Accident · No injuries · Data collection · Final report - Date: March 21, 2019, 11:00 local (15:00 UTC) - Place: Hollywood, FL - Coordinates: 25.998888, -80.24028 (estimated) - Nearby events: https://openairdocs.org/map.md?lat=25.9989&lon=-80.2403&mi=10 - Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping) - Defining events: [Taxi-from runway: Ground collision](https://openairdocs.org/ntsb-events/200); [Standing-engine(s) operating: Ground collision](https://openairdocs.org/ntsb-events/200) - Highest injury: No injuries - Injuries: 3 uninjured - Status: Completed, report November 6, 2019 - Report: Approved by Office Director - NTSB office: General Aviation Accidents - Parties: FAA - NTSB case key (mKey): 99208 - NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA19CA190 - NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/99208/pdf - NTSB docket: https://data.ntsb.gov/Docket?ProjectID=99208 - Page: https://openairdocs.org/ntsb/GAA19CA190 ## Probable cause (aircraft 2) The other pilot's failure to maintain adequate clearance from the stopped airplane while attempting to taxi around it. ## Probable cause (aircraft 1) The student pilot's failure to maintain adequate clearance from the stopped airplane while attempting to taxi around it. ## Findings NTSB's coded findings; those marked are part of the probable cause. - [Attention/monitoring: monitoring other aircraft](https://openairdocs.org/ntsb-findings/02021540): Personnel issues › Psychological · Student/instructed pilot (probable cause), aircraft 1; cases with it: [Cessna 172M, 8 cases](https://openairdocs.org/ntsb-findings/02021540/cases.md?model=2072418), [All aircraft, 231 cases](https://openairdocs.org/ntsb-findings/02021540/cases.md) - [Object/animal/substance: aircraft](https://openairdocs.org/ntsb-findings/03022040): Environmental issues › Physical environment · Effect on operation (probable cause), aircraft 1; cases with it: [Cessna 172M, 5 cases](https://openairdocs.org/ntsb-findings/03022040/cases.md?model=2072418), [All aircraft, 116 cases](https://openairdocs.org/ntsb-findings/03022040/cases.md) - [Attention/monitoring: monitoring other aircraft](https://openairdocs.org/ntsb-findings/02021540): Personnel issues › Psychological · Pilot of other aircraft (probable cause), aircraft 2; cases with it: [Cessna 150M, 4 cases](https://openairdocs.org/ntsb-findings/02021540/cases.md?model=2071830), [All aircraft, 231 cases](https://openairdocs.org/ntsb-findings/02021540/cases.md) - [Object/animal/substance: aircraft](https://openairdocs.org/ntsb-findings/03022040): Environmental issues › Physical environment · Effect on operation (probable cause), aircraft 2; cases with it: [Cessna 150M, 1 case](https://openairdocs.org/ntsb-findings/03022040/cases.md?model=2071830), [All aircraft, 116 cases](https://openairdocs.org/ntsb-findings/03022040/cases.md) ## Sequence of events The events NTSB coded, in order, by phase of flight. The defining event best describes what happened. - [Taxi-from runway: Ground collision](https://openairdocs.org/ntsb-events/200) (defining event), aircraft 1; cases with it: [Cessna 172M, 15 cases](https://openairdocs.org/ntsb-events/200/sequence.md?model=2072418), [All aircraft, 618 cases](https://openairdocs.org/ntsb-events/200/sequence.md) - [Standing-engine(s) operating: Ground collision](https://openairdocs.org/ntsb-events/200) (defining event), aircraft 2; cases with it: [Cessna 150M, 4 cases](https://openairdocs.org/ntsb-events/200/sequence.md?model=2071830), [All aircraft, 618 cases](https://openairdocs.org/ntsb-events/200/sequence.md) ## Analysis (aircraft 2) The student pilot reported that, after landing, she and the flight instructor requested to taxi back to the runway for traffic pattern practice. They were instructed to taxi to the runway at a taxiway intersection. They complied and lined up behind another aircraft holding short of the runway. She added that, while stopped and waiting for a takeoff clearance, she felt the airplane shake. She turned around and saw that another airplane had struck their airplane's vertical stabilizer and rudder. The solo student pilot in the other airplane reported that, after landing, during taxi from the runway to parking, he saw an airplane holding short of the runway at a taxiway intersection. He thought there was enough clearance to taxi around the airplane, but his airplane's left wing struck the stopped airplane. The stopped airplane sustained substantial damage to the vertical stabilizer and rudder. The student pilot of the stopped airplane and the flight school manager for the taxiing airplane reported that there were no preaccident mechanical failures or malfunctions with either of the airplanes that would have precluded normal operation. ## Analysis (aircraft 1) The student pilot reported that, after landing, she and the flight instructor requested to taxi back to the runway for traffic pattern practice. They were instructed to taxi to the runway at a taxiway intersection. They complied and lined up behind another aircraft holding short of the runway. She added that, while stopped and waiting for a takeoff clearance, she felt the airplane shake. She turned around and saw that another airplane had struck their airplane's vertical stabilizer and rudder. The solo student pilot in the other airplane reported that, after landing, during taxi from the runway to parking, he saw an airplane holding short of the runway at a taxiway intersection. He thought there was enough clearance to taxi around the airplane, but his airplane's left wing struck the stopped airplane. The stopped airplane sustained substantial damage to the vertical stabilizer and rudder. The student pilot of the stopped airplane and the flight school manager for the taxiing airplane reported that there were no preaccident mechanical failures or malfunctions with either of the airplanes that would have precluded normal operation. ## Factual narrative (aircraft 2) The student pilot reported that, after landing, she and the flight instructor requested to taxi back to the runway for traffic pattern practice. They were instructed to taxi to the runway at a taxiway intersection. They complied and lined up behind another aircraft holding short of the runway. She added that, while stopped and waiting for a takeoff clearance, she felt the airplane shake. She turned around and saw that another airplane struck their vertical stabilizer and rudder. The solo student pilot reported that, after landing, during taxi from the runway to parking, he saw an airplane holding short of the runway at a taxiway intersection. He thought there was enough clearance to taxi around the airplane, but his left wing struck the stopped airplane. The stopped airplane sustained substantial damage to the vertical stabilizer and rudder. The student pilot of the stopped airplane and the flight school manager for the taxiing airplane reported that there were no preaccident mechanical failures or malfunctions with either of the airplanes that would have precluded normal operation. ## Factual narrative (aircraft 1) The student pilot reported that, after landing, she and the flight instructor requested to taxi back to the runway for traffic pattern practice. They were instructed to taxi to the runway at a taxiway intersection. They complied and lined up behind another aircraft holding short of the runway. She added that, while stopped and waiting for a takeoff clearance, she felt the airplane shake. She turned around and saw that another airplane struck their vertical stabilizer and rudder. The solo student pilot reported that, after landing, during taxi from the runway to parking, he saw an airplane holding short of the runway at a taxiway intersection. He thought there was enough clearance to taxi around the airplane, but his left wing struck the stopped airplane. The stopped airplane sustained substantial damage to the vertical stabilizer and rudder. The student pilot of the stopped airplane and the flight school manager for the taxiing airplane reported that there were no preaccident mechanical failures or malfunctions with either of the airplanes that would have precluded normal operation. ## Aircraft 1 - Registration: [N20521](https://openairdocs.org/aircraft/N20521), registered now, S/N 17261359, built 1973 (OpenAirDocs) - Reported make and model: Cessna 172 (M) - Registry model: [Cessna 172M](https://openairdocs.org/model/cessna-172m) (registry code 2072418) (OpenAirDocs) - Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 17261359 - Year built: 1973 - Airframe hours: 17819.6 - Engines: Lycoming O-320-E2D 150 horsepower reciprocating - Damage: Minor damage - Flight: Instructional, Part 91 - Operator: Atlantis Flight Academy Inc - Registered owner: Atlantis Flight Academy Inc - Airworthiness certificate: Standard, Normal - Last inspection: 100 hour, February 28, 2019 - Departed: HWO, Hollywood, FL - Destination: HWO, Hollywood, FL - Flight plan: VFR - Airport: HWO, North Perry - Equipment: None ## Aircraft 2 - Registration: [N704VM](https://openairdocs.org/aircraft/N704VM), registered now, S/N 15078909, built 1976 (OpenAirDocs) - Reported make and model: Cessna 150 (M) - Registry model: [Cessna 150M](https://openairdocs.org/model/cessna-150m) (registry code 2071830) (OpenAirDocs) - Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs) - Category: Airplane - Serial number: 15078909 - Year built: 1976 - Airframe hours: 6911.4 - Engines: Continental O-200-A 100 horsepower reciprocating - Damage: Substantial damage - Flight: Instructional, Part 91 - Airworthiness certificate: Standard, Utility - Last inspection: Annual, September 7, 2018 - Departed: HWO, Hollywood, FL - Destination: HWO, Hollywood, FL - Airport: HWO, North Perry - Equipment: Stall warning system ## Flight crew As NTSB recorded them. NTSB leaves out names. - Student pilot, aircraft N20521; age 19; injuries: none; student; medical: class 3, without waivers/limitations; seat: left; flight hours: 26.3 total, 26.3 in this make and model, 26.3 in the last 90 days, 11.1 in the last 30 days, 1.3 in the last 24 hours - Student pilot, aircraft N704VM; age 26; injuries: none; student; medical: class 3, without waivers/limitations; seat: left; restraint: 3-point; flight hours: 63 total, 61.5 in this make and model, 31.1 as pilot in command, 63 in the last 90 days, 18.3 in the last 30 days, 1 in the last 24 hours - Flight instructor, aircraft N704VM; age 70; injuries: none; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, with waivers/limitations; last flight review July 1, 2017; seat: right; restraint: 3-point; flight hours: 3,600 total, 400 in this make and model, 3,100 as pilot in command, 60 in the last 30 days, 3 in the last 24 hours ## Weather - Conditions: Visual (VMC), Day - Wind: 350° at 10 knots - Visibility: 10 statute miles - Temperature: 72 °F, dew point 63 °F - Altimeter: 30.02 inHg - Observed at: KHWO ## FAA reports on this event (2) The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs). - [Accident 20190321010681A](https://openairdocs.org/incident/20190321010681A), Mar 21, 2019: Cessna 172M, Hollywood, FL, Minor damage. Hollywood, FL (hwo): N20521, C172, struck N704VM, C152, while taxing to runway 1R. N704VM had 2 occupants on board and was holding short at runway 1R. POB: 3,… - [Accident 20190321014961A](https://openairdocs.org/incident/20190321014961A), Mar 21, 2019: Cessna 150M, Hollywood, FL, Substantial damage. 3/21/19 Event id 567172; Hollywood, FL (hwo): N20521, C172, struck N704VM, C152, while taxing to runway 1R. N704VM, C152 with 2 occupants on board was holding… ## Docket (5 files) The files NTSB released with the investigation on April 25, 2019, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=99208. 21.6 MB in all. - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (N20521) (item 1, .PDF, 3.6 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472171&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%20(N20521)-Master.PDF - Pilot/Operator Aircraft Accident Report, NTSB Form 6120.1 (N704VM) (item 2, .PDF, 17.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472172&FileExtension=.PDF&FileName=Pilot%2FOperator%20Aircraft%20Accident%20Report,%20NTSB%20Form%206120.1%20(N704VM)-Master.PDF - N20521 - Student Pilot's Statement (item 3, .PDF, 107 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472173&FileExtension=.PDF&FileName=N20521%20-%20Student%20Pilot%27s%20Statement-Master.PDF - N704VM - Flight Instructor's Statement (item 4, .PDF, 61 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472174&FileExtension=.PDF&FileName=N704VM%20-%20Flight%20Instructor%27s%20Statement-Master.PDF - Accident Photos (item 5, .PDF, 2 photos, 789 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=40472175&FileExtension=.PDF&FileName=Accident%20Photos-Master.PDF From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.